Justin h



` (No Model.)

J. H. BURDICK.

v NUT.

No. 469,678. Patented Mar. 1, 1892.

- fh foWL-' CMA/Cam @8i/MMM@ @I/Wwweg/ 'A UNITED STATES PATENT OFFICE.

JUSTIN II. BURDIOK, OF MILTON, ASSIGNOR TO THE ELASTIO NUT COMPANY,

OF MILWAUKEE,` WISCONSIN.

NUT.

SPECIFICATION forming part of Letters Patent No. 469,67'8, dated March1, 1892. I

Application filed May 4. 1891. Serial No. 391,501. (No model.)

T o all whom, iv' may concern:

Be it known that I, JUSTIN H. BURD1cK,.a citizen of the United States,and a resident of Milton, in the county of Rock, andr in the State ofWisconsin, have invented certain new and useful Improvements in Nuts;and I do hereby declare that the `following is a full, clear, and exactdescription thereof.

My invention relates to nuts; and it consists in certain peculiaritiesof construction, as will be fully set forth hereinafter, andsubsequently claimed.

In the drawings, Figure l is a view of my im'proved device in sideelevation. Fig. 2is a plan View thereof. Fig. 3 is a View of the blankfrom which my nut is made.

A, Fig. 3, represents the said nut-blank, consisting of a strip of iron,steel, or other suitable material, the central portion of which is ofrectangular form, having an integral extension (marked aand b,respectively) at each end. The extension a is parallel on its upperedge, -with the upper edge of the main portion of the strip A, while thelower edge of the extension b is similarly parallel with the lower edgeof said main portion. Each of these extensions has a vertical end edge cand d of alength or height somewhat greater than one-half the height ofthe main portion A, and the adjacent ends e and f of said main portionare likewise straight and of a height or depth somewhat greater thanone-half the height of said main portion A. The lower edge g of theextension a runs at an acute angle from the lower end of the line c tothe upper endof the line e, while the upper edge h of the extension bruns at a like angle from the lower end of the line f to the upper 'endof the lined, all as shown in Fig. 3, so that when the ends of the blankare put together one of said extensions a (or b) will exactly ll thespace above (or below) the other extension.

In forming nuts from my described blank it is customary to employ asuitable die or dies, within which the ends of the said blank arebrought together, forming a more or less complete ring, which may thenbe placed within other dies to give the required hexagonal or othershape to the exterior of the nut, (as well as the crown B when desired;)but these dies and the method of placing the blank or ring within themform no part of my present invention, as the said nuts may be formedfromthe described blank by hand as well as by any suitable machinery.When the ends of the blank have been brought together and the nut shapedtherefrom, as shown and described, the bore of the nut is tapped in theordinary manner, and the described end extensions a. and b form a lock,which prevents undue lateral spreading or opening of the nut, when thesame is screwed upon a bolt, while at the same time the nut is capableof sufficient separation in use to serve as a lock or spring nut, theinherent elasticity of the nut tending always toward the originalclosure shown in Fig. l, and hence causingthe nut to always tightly gripand hold the bolt on which itis placed.

)Vhile I have shown and described the ends of the main portion of theblank and of the extensions thereof as straight or vertical, and theinner edges of said extensions as being oblique or at an acute angle tothe horizontal, which is my preferred construction, it will beunderstood that I do not limit myself thereto, as all these. lines maybe varied at will, so long as the slit in the nut extends from the topof the nut to a point below the longitudinal center thereof, (indicatedby the dotted line i in Fig. 1,) and thence laterally to a point abovesaid center, and thence downward to the bottom of the nut.

Having thus described my inventiomwhat I claim as new, and desire tosecure by Letters Patent, is-

1. A nut-blank consisting of a strip of metal the ends of which areformed with integral extensions, one parallel at its upper edge with theupper edge of said strip, while the lower edge of the other extension isparallel with the lower edge of said strip, and the inner edges of saidextensions being formed on oblique lines extending from a point below toa point above the longitudinal center of said strip.

2. A nut provided with a slit extending from the top of said nut to apoint below the the county of Milwaukee and State of fiscenter thereof,and thence laterally to a point consin, in the presence of twoWitnesses. above said center, and thence downward to the bottom of saidnut, substantially as set JUSTIN H' BURDICK' 5 forth. Witnesses: Intestimony that I claim the foregoing I I-I. G. UNDERWOOD,

have hereunto set my hand, at Milwaukee, n- JOHN E. VILES.

